Visible index book



p J. SCHADE 1,822,669

VISIBLE INDEX BOOK Filed July 27, 1929 4 Sheets-Sheet 1.

j nuenfor c/o/vz Sc/zaae epto 8, 1931. J SQHADE 1,822,669

VIS IBLE INDEX BOOK Filed July 2'7, 1929 4 Sheets-Sheet 2 41 [M41 Pr" M f 710? for (filial-nay Sepi. s, 1931. J. SCHADE 1,822,669

VISIBLE INDEX BOOK Filed July 27, 1929 4 Sheets-Sheet 3 29 IEEEE'rzE- is Inven/or J. SCHADE VISIBLE INDEX BOOK Filed July 27, 1929 Sept. 8, 1931.

4 Sheets-Sheet 4 fiazlQu.

Patented Sept. 8, 1931 UNITED I STATES PATENT OFFICE H O DE; HQ Y KE MASSAC USETTS, ASsIGNOR: T NATIONALBLANK BOOK COMPANY, or HOLYOKE, MASSAonUsErTs, a GOR-BQRATIQN or MASSACHUSETTS VISIBLE. lNDEX BOOK Application filed July, 27,

This invention relates to visible index books of the style in which straight posts are employed for the purpose of holding the leaves. These books comprise telescoping back sections which are usually spaced apart the posts must extend upwardly before they can overlie these edges when said leaves are thrown outwardly so as to rest against the open covers and this renders it diificult to write on the leaves because they do not lie flat enough against the covers.

The object of thisinvention is toiovercome this defect and also to cause the leaves to 'lie flatagainst the open covers in a majority of instances without spreading the sections at all;

A further object of the invention is to steady the equalizing mechanism that: is connected to'the sections so asto cause it tobe e held in close contact with the backs of the sections,

A further obj ec-tofi the invention is to pro vide a locking mechanism the initial opera 'tion of which will unlock the sjections'afnd cause their partial spreading, in: order to make it very convenient to spread the sec-A tion-s,

In the accompanying drawings, which areto be reada a p of thisdescription:

Figure 1 is an. inside View of the book as it appears when closed with,the covers opened and broken away.

Figure2 is a section at theline ,2'2 of.

t Figure 1. s

Figure 3 is a view similar toFigure 1 with the sections opened, but with the posts in position to permit themanipulation of the leaves fromone side of. the book to theother. Figure t is a view likewise similar toF-ig 1929. Serial No.

ure 1 With thesections opened totheir limit, and the posts in position to'beswung upwardly tofpermit ofthe removal or insertion. of leaves. 1

Figure 5 is a side elevation of the cons-truction shown at Figure 1. t

Figure 6 is a View similar to Figure lbut showing the side bars that carr it-he posts opened and with the strai ht posts in vertical position to allow the leaves to be removed or inserted l t Figure 7 is a fragmentary broken view of the upper end of. the construction shown at Figure 6i Figure 8 is. a section at the line 8r-8 of Figure 1 in which the sections are fullyclosed. a

Figure 9 is a section on the same line 8, 8 showing the sections partly spread'after the initial depression of the lock'lever.

FigurelO is a section at. the 1ine'10i1'0 of Figure 3. t

Figure 11 is a sectionat! theline 1111 of Figure 3 showing the leaveson the posts in opened condition. 1

12 is across-section of the book with the sections and. covers closed, and show ing leaves on; the posts and Figure 13 is a fragmentary sectionat. the 1ine13:-13of Figure 1. r a

Similar numerals of reference denote like: partsin, the several: figures of the drawings.

Books of rthis description are composed of whatare known, as telescoping sections, and

in the present instance thesesections' arecomposed of'back plates 1,2; theformer; over-- lyiingi'the latter in slidable relation, and these plates 1', 2; have rectangular ends'3, 4', respecmay, thatrterminate in inturned flanges 5, 6,

the flangesfrunderlying the flanges 6 also in slidable relation.v 4

One ofi the flanges 6 has spaced slots 7 8, while t'he coacting flange 5 has a gate 9, and to the inner-face of the end 3, fromfwhich the fiange 5 extends, is pivoted a latch lever 10 which is normally urged upwardly by means of aspiring 11 carried by this end 3.

The nose] Z) of the latch 10 normally is forced upwardly by the spring through the slot and gate-9whenthesections are fully closed whereby these sections are locked, as shown at Figures 1 and 8.

Extending rigidly from the latch lever 10 is a finger piece 12 that rises above the tele scoping flanges in spaced relation thereto, and immediately below this finger piece, when the sections are fully closed, is a teat 13 secured to the flange 6, and when this finger piece is depressed it will strike against this teat and thereby not only release the lever 10 from its latching position but also cause the telescoping sections to be forced slightly apart, as shown at Figure 9, so that when pressure on the finger piece is removed, the latch will not spring back into locking position, and the sections can then be readily spread apart until the nose of the latch engages within the slot 8 as shown at Figures 3 and 10.

When it is desired to spread the telescoping sections from the position shown at Figure 3 to their limit which is illustrated at Figure 4, the finger piece 12 is depressed so as to withdraw the nose of the latch member from the slot 8 and the sections are then pulled apart to their limit for the purpose hereinafter to be described.

The outer edges of the back plates 1, 2, have formed therealong spaced hinge eyes 14, 15, and side bars 16, 17, have secured thereto at suitable locations hinge plates 18, 19, which depend below the bars and are formed into hinge eyes 20, 21.

The covers, which are denoted by the numerals 22, 23, have secured thereto at their inner edges metallic hinge plates 24, 25, having formed along their inner edges hinge eyes 26, 27, andthe hinge eyes on the'covers, the plates 1, 2, and the side bars 16, 17, are all alined and pintles 28, 29, driven there through, so as to hinge the covers and the side bars to these back plates.

It is desirable to provide some meansfor equalizing the strains on the telescoping sections so that the latter may be readily spread apart whether they are grasped at the ends or toward the middle portion, and this equalizing mechanism will now be described.

30 is a floating bar which extends lengthwise of the sections relatively close to the plates 1, 2, and to this bar at spaced intervals are pivoted pairs of toggle levers 31, 32, the outer extremities of the levers of each pair being pivoted respectively to the back plates 1 and 2, as denoted by the numerals 33, 34.

Formed within the plates 1 and 2 are arcu ate slots 35, 36, these slots being described respectively from the pivotal points 33 and 34. The spaced pivotal connections of the toggle levers with the floating bar 30 consist of studs 37 and 38 which extend through these arcuate slots 35 and 36, and are headed beneath the same, sothat when the sections are operated they will not only be steadied but '3 the plates 1, 2, will be maintained in close re- 2, so that when the telescoping sections are closed or not opened to their full extent these lock plates will lie beneath the raised portions of the toggle levers, and the side bars will be thereby kept in normal position, but when the sections are fully opened as shown at Figure 4 the toggles will have passed beyond these locking plates and the side bars will be capable of being swung outwardly to the position shown at Figure 6, for the purpose presently to be explained.

A series of posts must be provided over which perforated leaves a may be inserted, and the structure of these posts is a very important feature of the present invention and will now be described.

The posts are secured to the side bars and extend toward each other in staggered relation and in parallelism with each other and with the plates 1, 2, as is customary in books of this description, but all the posts have their bases secured to the side bars by passing through the latter from top to bottom and {)irmly riveting the ends of the bases to said ars.

All of the postsextend upwardly from the upper edge of the side bars in arcuate form as denoted particularly by the numeral 41 with respect to the posts that extend from the side bars 16, and by the numeral 42 with re spect to the posts" that extend from the side bar 1.7, and these arcuate parts extend in wardly and merge into straight post portions 43 and 44.

lVhen the sections are completely closed the covers may be opened, and the leaves contained on the posts may be readily manipulated backand forth andinay be thrown outwardly down against the covers and will lie suiiiciently flat thereon so that they may be readily inscribed by a pen or otherwise, this being due solely to the fact that the posts as a whole rise from the top of each side bar in arcuate form so that there is no obstruction whatever in the way of the leaves when they are thrown sidewise onto the covers.

In case the book is very full the sections may be spread to the position shown at Figure 11 and more room provided for the readily manipulation of the leaves.

The plates 1, 2, are prevented from complete disengagement by the abutting of the studs 37,38, against the ends of the arcuate slots 35, 36. i

hat is claimed is 1. A loose leaf book comprising telescoping back plates having arcuate slots and an equalizing mechanism consisting of a floating bar extending lengthwise of said sections, pairs of toggle levers having their outer ends pivoted to said sections, and studs extending loosely through said bar, the inner ends of said levers and said slots, said studs having heads whereby the sections and equalizing mechanism are held in position.

2. A loose leaf book, comprising telescoping back members, elongated side bars and covers pivoted to the outer side edges of said members and leaf-holding posts having their base portions secured to said bars and extending in arcuate form above the latter and merging into straight posts that are parallel to each other and to said members.

3. A construction as in claim 2, with the addition that the back members have rectangular ends that have inwardly directed flanges slidably disposed one above the other, the outer flange of one end having spaced slots, and the inner face of the cooperating end having pivoted thereto a resilient latch lever capable of engaging said slots through an opening in the inner flange, a finger piece extending from said latch lever and terminating above said outer flange, while the latter has a beveled teat against which the finger lever is depressed to release the latch and initially spread the telescoping members.

at. A loose leaf book, comprising telescoping back members, elongated side bars and covers pivoted to the outer side edges of said members, leaf-holding posts having their base portions secured to said bars and extending in arcuate form above the latter and merging into straight posts that are parallel to each other and to said members, equalizing mechanism pivotally related to said members and automatically operated by the spreading and closing of said members, and lock plates depending from said bars and lying flat against said members and confined by said mechanism until said members are spread to their limit, whereby said bars are locked and are permitted to be swung upwardly only when said members are fully spread apart.

5. A loose leaf binder comprising telescoping backs and ends and having sides that are rigid with said backs and ends, and leafholding posts which project from the upper edges of said sides in arcuate forms that merge into straight inwardly extending posts that are parallel to each other and to said backs.

6. A loose leaf binder comprising sections that have telescoping backs'and ends, the end of one section having an inwardly extending flange that overlaps a similar flange on the end of the other section, said overlapping flange having spaced slots and an upwardly projecting beveled teat, and a resilient latch lever pivoted to the inside face of the end of the other section and having a nose that engages through an opening in the overlapped flange with one of the slots in the overlapping flange when the sections are completely closed hereto.

JOHN SCHADE. 

